Chapter 27
Five Kingdoms-5 12:24-16:33
I. Division Anthophyta
A. Called angiosperms because the ovule develops inside an enclosed ovary
B. Contains all true plant parts: roots, stems, leaves, flowers, fruits, and seeds
C. The
gametophyte
is dependent on the
sporophyte
for all phases of its formation and
development
D. Comparison of monocots and dicots
1. Monocots
a. Flower parts in 3s or multiples of 3s
b. Leaves with parallel veins
c. One cotyledon per seed
d. Stems with scattered bundles
e.
Roots, in
primary
growth, contain a
vascular
cylinder with six to many
protoxylem poles
2. Dicots
a. Flower parts in 4s or 5s or multiples of 4s or 5s
b. Leaves with net veins
c. Two cotyledons per seed
d. Stems with vascular bundles in a ring
e.
Roots, in
primary
growth, contain a
vascular
cylinder with two to five
protoxylem
poles
II. Class Monocotyledonae
A. Two types of monocots have been included for your
study, the monocots with flowers
that are
showy
and that you are accustomed to seeing and monocots that have
grass-like flowers which are not showy.
B. Showy flowered group
2. Genera
a. Family Liliaceae - lily family
(1) Ovary superior
(2) Flowers regular
b. Family Iridaceae - iris family
(1) Ovary inferior
(2) Flowers regular
c. Family Orchidaceae - orchid family
(1) Ovary inferior
C. Grass-flowered group
1. Key characteristics
Sedges have edges
Rushes are round
Grasses have nodes
That are easily found
2. Genera
a. Family Cyperaceae - sedge family
(1) Triangluar stems
(2) No visible nodes
(3) Typically found in damp habitats
b. Family Juncaceae - rush family
(1) Round stems
(2) No visible nodes
(3) Typically found in wet habitats
c. Family Poaceae - grass family
(1) Round stems
(2) Visible nodes
(3) May be found in wet, damp, or dry habitats
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